Clarify that set_ticks() affects major/minor ticks independently

Closes matplotlib#27701.

Author: timhoffm

lib/matplotlib/axis.py

@@ -2114,7 +2114,7 @@ def set_ticks(self, ticks, labels=None, *, minor=False, **kwargs):
             If not set, the labels are generated using the axis tick `.Formatter`.
 
         minor : bool, default: False
-            If ``False``, set the major ticks; if ``True``, the minor ticks.
+            If ``False``, set only the major ticks; if ``True``, only the minor ticks.
 
         **kwargs
             `.Text` properties for the labels. Using these is only allowed if